1. 1st divide to half take the heavier out - O7 T5 G) m! O0 Sos.tvboxnow.com2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for) ; q8 k/ c7 E, w0 }5 I公仔箱論壇3. Same method if is not equal on 2nd try.